Improvement in dampers



2Sheefs- S heetI.- J G. KUPPING.

Dampers.

N0,]54,79 8.' Patented Sept.8,1874."

WITNESSES INVENTOR H fiMK/ M W Attorneys THE GRAPHIC OD.PHOYO-LITH.3S&M PARK FLAOEJLY UNITED STATES PATENT OFFICE.

JOHN G. KOPPING, OF CLINTON, IOWA.

IMPROVEMENT IN DAMPERS.

Specification forming part of Letters Patent No. 154,798, dated September 8,1874 application filed August 1, 1874.

To all whom it may concern:

Be it known that I, JOHN G. KOPPING, of Clinton, inthe county of Clinton and State of Iowa, have invented a new and valuable Improvement in Stove-Damper and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 is a front View of my perforated spring-holder, and of the hooked end of the damper-shaft applied to a section of stovepipe. Figs. 2 and 3 are plan views of the same, and Fig. 4 is a sectional view. is a plan view.

This invention has relation to stove-pipe dampers; and it consists in a damper which is composed of two hinged semicircular sections constructed with hooks to receive arms on the damper-rod, in combination with a hook on one end of said rod and a perforated springholder, whereby a self-regulating damper is obtained which can also be regulated by hand,

.as will be hereinafter explained.

Fig. 5'

loosely, as indicated at c c. E E are two arms, which are secured to the rod 0 in the center of the pipe A, and e is a tongue, which is also secured to the rod 0, the object of which tongue is to lift one of the damper-sections over and upon one of the arms E in adjusting the said sections from the position shown in Fig. 5 to that shown in Figs. 2 and 4, in which latter position the arms E hold the sections stifiy together by engaging with the hooked portions 01. When the damper-sections D D are detached from the arms E, and the hook at on rod 0 is engaged with the lowermost hole in spring B, the sections will hang freely, and will be spread out more or less, according to the force of the draft. I thus have a self-acting damper. By turning the sections over and adjusting the arms E under the hooks d d the sectionswill be held rigidly together in the same plane, and may be adjusted and set at any desired angle like any well-known damper.

The perforations b through the damper-sections D D are for the purpose of allowing the escape of gas when the sections are in the closed position shown in Fig. 2.

What I claim as new, and desire to secure by Letters Patent, is-

The damper-sections D D, hinged to a hooked rod, 0, in combination with arms-E, hooks d, and a perforated spring, B, substantially as described.

In testimony thatI claim the above I have hereunto subscribed my name in the presence of two witnesses.

JOHN GEORG KOPPING.

Witnesses:

J. B. SGHRYVER, GEO. HAYWOOD. 

